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Activity overview:

This organic chemistry video tutorial focuses on UV Vis spectroscopy. It shows you how to identify which molecule or alkene absorbs UV radiation in the range of 200-400nm. Examples include 1,3-butadiene, 1,4-pentadiene, 1-pentene, cyclohexene, 1,3,5-hexatriene, and 1,3,5,7-octatetraene. Wavelength is associated with alkene stability. This video contains plenty of examples and practice problems of conjugated alkenes, dienes, and polyenes.